Portable heater



L. O. KOCH.

PORTABLE HEATER. V APPLiICATION FILED JUNE 14, 1921.

Patented July 11, 1922.

Ji may? $01 LOUIS O. KOCH, OF LITTLE ROCK, ARKANSAS.

PORTABLE HEATER.

T 0 all whom it may concern:

Be it known that I, LOUIS O. K0011, a citizen of the United States, residing at Little Rock, in the county of Pulaski and State of Arkansas, have invented certain new and useful Improvements in Portable Heaters; and I do hereby declare the follow,- ing to be a fulhclear, and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and'use the same. i i y The invention. r'elates to portable heaters employing gas, oil, or the like, and has for its object to provide a simple and efficient construction involving a chamber at the base for receiving the heating element, in the form ofa burner or other heat-generating apparatus, with a superposed radiating section provided with a transverse open air flue ,to afford additionalradiating surface and suitable baffle plates to cause the products of combustionor heated ,air,to circu-- late in proximity to the radiating surfaces, one or more removable sections superposed in stacked relation, and each provided with a similar transverse air flue and battle plates, and a top adapted to close the uppermost removable chamber or section, providedwith a flue or pipe for conveying away the proclucts of combustion, the unit as a whole being adapted to be made larger or smaller by supplying or removing removable sections betweentheiirst radiating section and the top to meet the varying conditions of use.

-The invention is illustrated in the accompanying drawing, in which Fig. 1 is a perspective view of the tip paratus with a portion of the front wall sec tion removed;

F ig. 2' is a vertical transverse section through one of the units; and

Fig. 3 is a vertical longitudinal section on line 3-3 of Fig. 2.

Referring to the drawing, 1 indicates the base of the heater, which is preferably constructed of a generally box-like form supported by suitable legs 2, and provided with an opening 3 in one face closed by a suitable door 4. The bottom of the base section and preferably the lower ends of the sides are provided with openings or perforations 5 to admit the necessary air to the combustion chamber, which may be supplied with an oil burner, a gas burner, or any other suitable heat generator, not shown. Mounted upon the top of the base, and pref- Specification of Letters Patent. Patentefl j l 11 1922 Application filed June 14, 1921. Serial No. 4773771. I

erablyconnectedtheretoby a suitable flange sm-rounding the opening in the top, is the first radiating unit comprising a box-like casing Topen at top and bottom, with the bottom edges engaging theflange 6 about the top opening in the base section 1. The radiating unit 7 is intersected by an open transverse air fine 8, formed by an openended casing 9 having end flanges 10 riveted to the inner faces of the front and rear walls of the sect on 7, so that the flue registers with openlngs in the front and rear walls of said section and permits the free circulation of air in contact with the inner walls of the fine; The air fine is relatively large, as compared with the interior dimensions of the section 7, so as to provide relatively narrow passages for the hot air or products of combustion rising from the heating element in the basel, and to cause the hot air or products of combustion to traverse section 7 in close proximityito the side walls of the latter and the walls of the air fine. In order to increase the radiating effectsand insure the heated currents to travel in contact with all of the adjacent metallic surfaces, a suitable baflie plate 11 is mounted on the bottom wall of the flue 8 which causes the heated currents to divide and flow on both sides of the flue, and horizontally extending baffle plates 12, 12, are mounted on the inner faces of the side walls of the sections 7 and serve to direct the heated currents over the top of the due. The upper edge of the section 7 is provided with an inwardly offset flange 13, which, when the heater is set up to be used without additional super iosed units, is ada ted to receive a'suita le top or cover 21, which fits over the upper rim and engages t-he shoulder formed by the flange 13, said cover being provided with a suitable vent pipe 22, which conducts away the products of combustion or waste gases.

As indicated, the device is adapted to be enlarged to provide additional radiating surface, by the superposition of one or more sections, each of which is constructed'generally likethe primary radiating section 7. Three of these superposed or stacked sections are illustrated in the drawing, but obviously a greater or lesser number may be employed, and, in fact, the height of the heating unit may be adjusted and regulated according to weather conditions by removing or adding sections as desired. Each section comprises an open-ended box-like element 14 having openings 15 in its front and back walls with Which register a flue '16 having flanged edges 17 connected to the inner faces of the front and back Walls of the section casing 14 about the marginal edges of the openings 15, in a manner similar to the construction and mounting of the flue 9 in section 7. Similar battle plates 18 and 19 are connected to the bottom of each flue 16 and the inner side Walls of each casing 14, as shown. The bottom edge of each section 14 is adapted to engage the flange 13,0n the top of section 1, or the similar flange 20 formed about the top edge of each section 14, as clearly illustrated in Figs. 2 and 3.

--When the desired number of sections 14 is assembled in stacked relation and the top 21 is applied to the uppermost section, it will be apparent that the heating currents arising from the basel' will be caused to traverse the several sections in zig-zag paths and in be 'freely circulatecl through the close proximity to the inner walls of the several sections and the walls of the fines 9 and 16, thereby affording a largely augrealized. Incidentally, theflues may be employed as open ovens for cooking or heating 1;; foods and thelike.

What I claim is: v

1. A heater comprising a base containing an open top compartment to receive the heating. element, a series of superposed removable radiator sections each provided with a. transverse open air flue, baflie plates carried bv the bottoms of the flues and the side walls of each section, a cover for the upper section, and a vent pipe connected withsaid cover.

2 A heater comprising a base containing an open top compartment to receive the heating element, a series of superposed re-' movable radiator sections each comprising a box-like casing open at topand bottom and having a transverse open air flue registering With openings in its opposite walls, a cover for the upper section, andavent pipe connected with said cover.

3. A heater comprising a base containing an open top compartmentto receive the heating element, a series of superposed removable radiator sections each comprising a box-like casing open at top and bottom and having a transverse open air flue registering-with openings'in its opposite walls, bat fle'platesoarried by the bottoms of the flues and the side walls of each section, a cover for the upper section, and a vent pipe con nected with said 'cover.

In testimony whereof I aflix my signature.

Louis 0. KOCH. 

